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Biology, 24.08.2020 01:01 lewismichelle11

Me ajudem por favor e urgente Observe a figura , ela representa o trajeto que o sangue faz do coração até os pulmões e o seu retorno (parte superior da figura) e o trajeto do sangue do coração ao corpo e seu retorno (parte inferior da figura). Por que o sangue ao retornar do corpo precisa passar pelos pulmões?
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Para retirar o gás carbônico que coletou das células e inserir gás oxigênio.
Para inserir gases e outras substâncias no sangue.
Para adquirir mais pressão e ter força para continuar seu trajeto.
Não tem motivo específico, pois ele passa pelo pulmão assim como passa em outros orgãos.

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Me ajudem por favor e urgente Observe a figura , ela representa o trajeto que o sangue faz do coraç...
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